CVE-2021-47194
cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type If the userspace tools switch from NL80211_IFTYPE_P2P_GO to NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it does not call the cleanup cfg80211_stop_ap(), this leads to the initialization of in-use data. For example, this path re-init the sdata->assigned_chanctx_list while it is still an element of assigned_vifs list, and makes that linked list corrupt.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.6
References 8
git.kernel.org
- stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24
- stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc
- stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21
- stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec
- stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13
- stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66
- stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd
- stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2